Impeller Cutting Jig Segmented Pressing Fixation
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Solution Overview
Problem
Existing methods for machining impellers face challenges in efficiently fixing the workpiece to a cutting jig without interference from the cutting tool, leading to potential rotational deviation, machining defects, or tool damage, while also risking deformation and reduced performance due to excessive force or speed limitations.
Innovation Solution
The impeller design features a base member with a through hole and protruding blades, along with recessed or protruded parts on its rear surface, which engage with corresponding parts on the cutting jig, allowing for secure fixation without excessive force, thus preventing deformation and maintaining performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the workpiece is pressed over a wide range to firmly fix it to the jig, then the fixation strength is improved, but the cutting tool may interfere with the jig
Solution Approach 1:
The pressing operation is divided into two distinct stages: a first pressing operation that presses the workpiece within a first pressing range, and a second pressing operation that presses the workpiece within a second pressing range. This segmentation allows each pressing operation to serve a specific function without causing tool interference, while collectively achieving firm fixation.
Solution Approach 2:
The first pressing operation is performed before the second pressing operation. The preliminary pressing within the first range positions the workpiece and provides initial fixation, preparing it for the subsequent pressing within the second range that achieves final firm fixation. This preliminary action sequence prevents tool interference while ensuring proper fixation.
2Object-affected harmful factors
If the workpiece is pressed in a narrow range near the center to avoid tool interference, then tool interference is prevented, but rotational deviation may occur due to cutting load
Solution Approach 1:
The pressing operation is divided into two distinct stages: a first pressing operation that presses the workpiece within a first pressing range, and a second pressing operation that presses the workpiece within a second pressing range. This segmentation allows each pressing operation to serve a specific function without causing tool interference, while collectively achieving firm fixation.
Solution Approach 2:
The first pressing operation is performed before the second pressing operation. The preliminary pressing within the first range positions the workpiece and provides initial fixation, preparing it for the subsequent pressing within the second range that achieves final firm fixation. This preliminary action sequence prevents tool interference while ensuring proper fixation.
3Stability of the object's composition
If the pressing force is increased to prevent rotational deviation, then rotational stability is improved, but workpiece deformation may occur
Solution Approach 1:
The pressing operation is divided into two distinct stages: a first pressing operation that presses the workpiece within a first pressing range, and a second pressing operation that presses the workpiece within a second pressing range. This segmentation allows each pressing operation to serve a specific function without causing tool interference, while collectively achieving firm fixation.
Solution Approach 2:
The first pressing operation is performed before the second pressing operation. The preliminary pressing within the first range positions the workpiece and provides initial fixation, preparing it for the subsequent pressing within the second range that achieves final firm fixation. This preliminary action sequence prevents tool interference while ensuring proper fixation.
4Stability of the object's composition
If the machining speed is decreased to prevent rotational deviation, then rotational stability is improved, but machining efficiency is reduced
Solution Approach 1:
The pressing operation is divided into two distinct stages: a first pressing operation that presses the workpiece within a first pressing range, and a second pressing operation that presses the workpiece within a second pressing range. This segmentation allows each pressing operation to serve a specific function without causing tool interference, while collectively achieving firm fixation.
Solution Approach 2:
The first pressing operation is performed before the second pressing operation. The preliminary pressing within the first range positions the workpiece and provides initial fixation, preparing it for the subsequent pressing within the second range that achieves final firm fixation. This preliminary action sequence prevents tool interference while ensuring proper fixation.
Data Source
AI summary
Provided is an impeller in which a through hole is provided in a center of a base member of the impeller and a plurality of recessed parts are formed on a bottom surface of the base member. Meanwhile, a jig using in a cutting work of the impeller includes a seating part having a seating surface, a shaft part is erected from a central part of the seating part and is engageable with the through hole of the impeller, and protruded parts are formed on the seating surface and are engageable with the recessed parts provided on the base-member bottom surface of the impeller.